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A letter from the British Engine Boiler & Electrical Co. Ld. to Powell Duffryn Associated Collieries Ld. regarding the examination of the No.1 Lancashire boiler at No.1 pit, Cwm Cynon Colliery. Letter typed in black ink on off-white, British Engine & Electrical Co.Ld. headed paper. Letter dated 6th December, 1939. The letter is signed in black ink, and there are also two other signatures with dates on the letter (one in pencil the other in green ink). Contained loose within a moroon hardback file with all other documents under accession number 85.184I/4.
